DTC 70 in BMW

Good to all the compas, I have a BMW X5 of 2002 4.4L that does not start and throws the code 70 of the crankshaft sensor and as the Autel scan that I have does not give other description I am trying to look for the breakdown of it. That is, if it is high input, low or that hell. The symptom is the intelligence of the signal in the coils and sometimes they do not even trigger, the only thing that always does is not start. If someone has the description of the Factory 70 code of this convicted BMW would pay it with my own blood. For those who work on this and have already passed it will be pushed from this poor person, thank you very much